diff --git a/src/controllers/tasks.controller.ts b/src/controllers/tasks.controller.ts
index a1f09ed..8abaf09 100644
--- a/src/controllers/tasks.controller.ts
+++ b/src/controllers/tasks.controller.ts
@@ -6,15 +6,12 @@ import { join } from 'path'
 import { formatDate } from 'utils/utcdate.util'
 import { GeneralScription } from 'models/chain/GeneralScription'
 import { BASE_TASK_TICKET } from 'common/Constants'
-import { BASE_TASK_REWARD, SIGN_SEQ, TicketRecord } from 'models/TicketRecord'
+import { BASE_TASK_REWARD, TicketRecord } from 'models/TicketRecord'
 import { ActivityGame } from 'models/ActivityGame'
 import { formatNumShow } from 'common/Utils'
-import { fetchClaimStatus } from 'services/chain.svr'
 import logger from 'logger/logger'
 const fs = require('fs')
 
-const prod = process.env.NODE_ENV === 'production'
-
 const initTasks = () => {
   const tasks = join(__dirname, '../tasks')
   const list = new Map()
@@ -22,11 +19,7 @@ const initTasks = () => {
     .filter((file: string) => ~file.search(/^[^.].*\.(ts|js)$/))
     .forEach((file: any) => {
       const Task = require('../tasks/' + file)
-      list.set(Task.default.name, {
-        name: Task.default.name,
-        desc: Task.default.desc,
-        show: Task.default.show,
-      })
+      list.set(Task.default.name, Task)
     })
   return list
 }
@@ -166,8 +159,11 @@ export default class TasksController extends BaseController {
     if (currentTask.status === TaskStatusEnum.NOT_START) {
       throw new ZError(11, 'task not begin')
     }
+    if (!allTasks.has(currentTask.task)) {
+      throw new ZError(14, 'task not found')
+    }
     if (currentTask.status === TaskStatusEnum.RUNNING || currentTask.status === TaskStatusEnum.PART_SUCCESS) {
-      let Task = require('../tasks/' + currentTask.task)
+      const Task = allTasks.get(currentTask.task)
       let taskInstance = new Task.default({ user, activity })
       await taskInstance.execute({ task: currentTask })
     }
@@ -202,6 +198,9 @@ export default class TasksController extends BaseController {
     if (currentTask.status !== TaskStatusEnum.SUCCESS && currentTask.status !== TaskStatusEnum.PART_SUCCESS) {
       throw new ZError(13, 'task not end')
     }
+    if (!allTasks.has(currentTask.task)) {
+      throw new ZError(14, 'task not found')
+    }
     if (cfg.checkChain) {
       const chainRecord = await GeneralScription.findOne({
         from: user.address.toLowerCase(),
@@ -217,7 +216,7 @@ export default class TasksController extends BaseController {
       // }
     }
 
-    const Task = require('../tasks/' + currentTask.task)
+    const Task = allTasks.get(currentTask.task)
     const taskInstance = new Task.default({ user, activity })
     const { score } = await taskInstance.claimReward(currentTask)
     const baseTaskSet = new Set(activity.baseTasks)